A test apparatus for testing a base station of a wireless communication system, comprises a downlink port, which receives a downlink signal from the base station, an uplink port, which emits an uplink signal to the base station, a signal processing unit, which is coupled to the downlink port and analyzes the downlink signal for timing information and generates a timing synchronization signal based on the downlink signal, and a signal generator, which is coupled to the signal processing unit and the uplink port and generates a predetermined signal frame and emits the generated predetermined signal frame based on the synchronization signal via the uplink port to the base station.
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1. A test apparatus for testing a base station of a wireless communication system, the apparatus comprising: a downlink port, which receives a downlink signal from the base station; an uplink port, which emits an uplink signal to the base station; a signal processing unit, which is coupled to the downlink port and analyses the downlink signal for timing information and generates a timing synchronization signal based on the downlink signal; and a signal generator, which is coupled to the signal processing unit and the uplink port and generates a predetermined signal frame and emits the generated predetermined signal frame based on the timing synchronization signal via the uplink port to the base station, wherein the signal generator comprises a data memory, which stores a number of data frames, wherein, when generating the predetermined signal frame, the signal generator reads one of the stored data frames from the memory.
A test apparatus validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing. It transmits this signal frame as an uplink signal back to the base station. The apparatus has a downlink port to receive, an uplink port to transmit, a signal processing unit for timing analysis, and a signal generator to create the signal frame. The signal generator uses a data memory to store multiple data frames and selects one to use when generating the predetermined signal frame.
2. The test apparatus according to claim 1 , wherein the signal generator timely synchronizes with the base station based on the synchronization signal and periodically emits the generated predetermined signal frame via the uplink port.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, further operates by synchronizing its transmissions with the base station using the extracted timing signal. The signal generator periodically transmits the generated signal frame through the uplink port, maintaining time alignment with the base station's timing.
3. The test apparatus according to claim 1 , wherein the signal generator emits a predetermined sequence of different data frames, which are stored in the memory.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, operates by generating a sequence of different data frames stored in its memory. Instead of sending the same frame repeatedly, it transmits a pre-defined order of various stored frames.
4. The test apparatus according to claim 1 , the uplink port comprising a radio frequency section, which is configured to generate based on the generated predetermined signal frame radio frequency signals and emit said radio frequency signals to the base station.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, has an uplink port that includes a radio frequency (RF) section. This RF section converts the generated predetermined signal frame into radio frequency signals and sends these RF signals to the base station.
5. The test apparatus according to claim 1 , wherein the signal processing unit comprises a capture unit, which is coupled to the downlink port and captures the downlink signal.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, includes a capture unit within its signal processing unit. This capture unit connects to the downlink port and records or samples the incoming downlink signal from the base station for later analysis.
6. The test apparatus according to claim 5 , wherein the signal processing unit comprises an analyzer, which is coupled to the capture unit and identifies in the captured downlink signal a base station clock, especially a base station frame clock, and provides the timing synchronization signal based on said base station clock.
The test apparatus, including a capture unit connected to the downlink port to record the incoming downlink signal from the base station, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, has an analyzer as part of the signal processing unit. The analyzer receives the captured downlink signal and identifies the base station's clock signal (especially the frame clock). It then provides the timing synchronization signal based on this identified clock.
7. The test apparatus according to claim 1 , wherein the signal processing unit comprises a clock-pulse generator, which is coupled to the analyzer, wherein the clock-pulse generator synchronizes to the base station based on the timing synchronization signal and generates respective synchronized clock pulses.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, includes a clock-pulse generator in its signal processing unit. This generator connects to the analyzer and synchronizes itself with the base station based on the timing synchronization signal, and produces synchronized clock pulses.
8. The test apparatus according to claim 7 , wherein the clock-pulse generator after startup generates independent clock pulses, and wherein the analyzer determines the displacement between the independent clock pulses and the base station clock and provides the synchronization signal to the clock-pulse generator, which after receiving the synchronization signal synchronizes to the base station clock.
The test apparatus, including a clock-pulse generator synchronized with the base station that produces synchronized clock pulses as part of the signal processing unit, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, starts by generating its own independent clock pulses. The analyzer then calculates the difference between these independent pulses and the base station's clock. Finally, the analyzer sends a synchronization signal to the clock-pulse generator so it can synchronize to the base station's clock.
9. The test apparatus according to claim 1 , wherein the signal processing unit and the signal generator during testing of a base station repeatedly synchronize to the base station.
The test apparatus, as described where it validates a wireless base station by receiving a downlink signal, extracting timing information to create a synchronization signal, and generating a predetermined signal frame based on this timing, and transmits this signal frame as an uplink signal back to the base station, repeatedly synchronizes its timing with the base station during the testing process. The signal processing unit and signal generator maintain synchronization to ensure accurate testing.
10. A test method for testing a base station of a wireless communication system, the method comprising: receiving a downlink signal from the base station; analyzing the downlink signal for timing information; generating a timing synchronization signal based on the downlink signal; generating a predetermined signal frame based on the timing synchronization signal; and emitting the generated predetermined signal frame based on the synchronization signal to the base station, wherein a number of data frames is stored in a memory, wherein generating the predetermined signal frame comprises reading one of the stored data frames from the memory.
A method for testing a wireless base station involves receiving a downlink signal from the base station, analyzing the downlink signal to extract timing information, and generating a timing synchronization signal from the downlink signal. A predetermined signal frame is generated based on the timing synchronization signal and transmitted to the base station. The method uses a memory to store multiple data frames, and generating the predetermined signal frame involves selecting one of these stored data frames.
11. The test method according to claim 10 , comprising timely synchronizing the emitting with the base station based on the synchronization signal and periodically emitting the generated predetermined signal.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, further involves synchronizing the transmission with the base station. This means the timing of the transmission is aligned to the base station based on the derived synchronization signal, and the predetermined signal is sent periodically.
12. The test method according to claim 10 , comprising emitting a predetermined sequence of different data frames, which are stored in the memory.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, involves transmitting a pre-defined sequence of different data frames stored in memory. Instead of sending one single frame repeatedly, the method sends a specific order of different frames.
13. The test method according to claim 10 , comprising generating based on the generated predetermined signal frame radio frequency signals and emitting said radio frequency signals to the base station.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, involves generating radio frequency (RF) signals from the generated predetermined signal frame and transmitting these RF signals to the base station.
14. The test method according to claim 10 , wherein analyzing the downlink signal comprises capturing the downlink signal.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, involves capturing the downlink signal as part of analyzing it. This capture step records the incoming downlink signal for further analysis.
15. The test method according to claim 14 , wherein analyzing the downlink signal comprises identifying in the captured downlink signal a base station clock, especially a base station frame clock, and providing the timing synchronization signal based on said base station clock.
The method of testing a wireless base station, including capturing the incoming downlink signal as part of analyzing it, by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, includes identifying the base station's clock (especially the frame clock) within the captured downlink signal and generating the timing synchronization signal based on this clock.
16. The test method according to claim 10 , wherein generating a timing synchronization signal comprises synchronizing a clock-pulse generator to the base station based on the timing synchronization signal and generating respective synchronized clock pulses with the clock-pulse generator.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, involves synchronizing a clock-pulse generator to the base station's timing using the generated timing synchronization signal. The clock-pulse generator then generates synchronized clock pulses.
17. The test method according to claim 16 , comprising generating independent clock pulses after startup of the clock-pulse generator, and determining the displacement between the independent clock pulses and the base station clock, and synchronizing the clock-pulse generator to the base station clock based on the determined displacement.
The method of testing a wireless base station, involving synchronizing a clock-pulse generator to the base station's timing using the generated timing synchronization signal and generating synchronized clock pulses with the clock-pulse generator, by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, involves generating independent clock pulses when the clock-pulse generator starts. The difference between these independent pulses and the base station's clock is determined. The clock-pulse generator then synchronizes to the base station's clock based on this determined difference.
18. The test method according to claim 10 , wherein generating a timing synchronization signal and generating a predetermined signal frame based on the synchronization signal are performed periodically during testing of the base station.
The method of testing a wireless base station by receiving a downlink signal, analyzing the signal for timing, generating a synchronization signal, creating a predetermined signal frame based on the timing signal, and transmitting the frame back to the base station, wherein a number of data frames is stored in a memory, and generating the predetermined signal frame comprises reading one of the stored data frames from the memory, repeats the timing synchronization and signal frame generation steps periodically during the base station test.
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February 18, 2016
July 4, 2017
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